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Brimar CV2129 VHF power amplifier pentode

Size This valve measures 65x20mm and has a B9A base

See also CV4039 which is based on this valve, and CV2014 which is a modified version.

Heater voltage 6V
Heater current 0.75A
Max anode voltage (Ia=0) 500V
Max screen voltage (Ig2=0) 500V
Max operating anode voltage 300V
Max operating screen voltage 250V
Max anode dissipation 12W
Max screen dissipation 2W
Anode current (Va=Vg2=250V;
Screen current 4.5mA
Mutual conductance 7mA/V
Amplification factor (g1 - g2) 16
Max operating frequency 175MHz
Cag1 (max) 0.3pF
Cge (nom) 9.5pF
Cae (nom) 4.5pF


Pin Function
1 Anode
2 n/c
3 Suppressor grid
4 Heater
5 Heater
6 Screen grid
7 Cathode
8 Control grid
9 Control grid



This file was last modified 15:45:29, Thursday February 24, 2022